WHEEL AS 2943457 - Caterpillar

glossary defines technical terms and abbreviations that are used in this manual.Actual Elevation - The height of the bucket tip above or below bench (zero). This value is a calculated value and the value changes dynamically.Bench - This is defined to be "zero".Depth to Grade - The vertical distance from Actual Elevation of the bucket tip to the Target Depth. This value is calculated and the value changes dynamically. An arrow indicates direction to grade. No sign is displayed.LED - Light Emitting Diode. A small, bright (usually colored) light used in electronic components.Pitch - The forward and aft grade (or mainfall) of the machine.Reach - The radial distance (in/out) of the bucket tip with respect to bench (zero). This value is calculated and the value changes dynamically. Out from the machine is negative, in toward the machine is positive.Target Depth - The vertical offset of the trench bottom from the bench (zero). This value is adjusted by the operator at any time with the "Depth Adjust" switch. Values are stored in Memories D1, D2 and D3, etc.